Device for securing pulleys to shafts



( (No Model.)

" F. ROCHOW.

DEVICE FOR SECURING PULLEYS T0 SHAFTS.

Patented Apr 19, 1887.

INVENTDR Feroltnalfol Roe/20W FIG, 4. d? r 'wrmzssss." d

UNITED STATES FERDINAND R PATENT EOFFICE.

OGHOVV, OF BROOKLYN, N EVV YORK.

DEVICE FOR SECURING PULLEYS TO QHAFTS.

SPECIFICATION-forming part of Letters Patent No. 361,323, dated April 19 1887. Application filed September 22, 1886. Serial No. 214.297. (No model.)

To all whom, it may concern! Be it known that I, FERDINAND Roonow, a citizen of Saxe-Ooburg-Gotha, Germany, and a resident of Brooklyn, in the county of Kings and. State of New York, have invented certain new and useful Improvements in Devices for Securing Collars and Pulleys to Shafts, of

which the following is a specification.

My invention relates to a novel device for securing collars and pulleys to fixed or rotary shafts, of which 'a full 'and clear description will be given hereinafter.

My invention consists of a conical or cy lindr-ical shaped block serrated on its larger diameter or base thereof, formed at the base to fit the shaft, the upper end of which .said

block engages with a screw-plug by direct contact or by means of a socket provided for that purpose in the end of the screw-plug, and the body of the said conical block being provided with a small hole adapted to receive the end of a screw-pin by which it is held within the concavity made in the hub or collar.

In the drawings, Figure 1 represents a 1011- gitudinal section of a collar in which is shown the principal features of. my invention. Fig. 2 represents a part cross-section taken on line A Bof Fig. 1. Fig. 3. is a detached view of the. screw-plug. .Fig. 4 is a detached'view of the conical block. Figs. 5 and 6 are modifications of Figs. 3 and 4.

Similar letters referto similar parts through out the drawings, in whicha represents the rotary shaft, and b the fixed collar provided with the concavity 1),

adapted to receive the conical block (I, the smaller end of which engages with the end of the screw-plug c, which enters the face of the collar. The conical block dis provided with the drilled holed, adapted to receive one end of the screw-pin e, the other end engaging with the screw f. The face of the larger end of the conical block is provided with a rough face, d", which engages with the surface of the rotary shaft to.

Modes operandi.-The screw 0 is set up against the conical block (I moderately tight, and where a strain is brought against the collar b, either in a direction longitudinally or transversely to the shaft, then as, the collar 1) pulley, the latter, after having passed through a very slight motion in the direction of the strain, will be unable to 'move any farther, unless the pressure is so grcat as to crush the metal of the shaft. i

It will be obvious that, whether this device he used on a collar or on a hub of a pulley, wheel, or sheave, &c., the action will be exactly the same; in fact, it may be used to advantage in a variety of cases where lateral movement between two objects has to be prevented, and where the distance between them is nnchangeable. The screw-pin e prevents the conical block d from turning and from falling out when the collar or hub of a pulley is removed from the shaft.

I am aware that set-screws with projecting construction as herein shown, as the screwpin and screw engaging therewith may be made in one piece" and the conical block may also be made square'or spherically, so it will be obvious that manydevices mayv be used without departing from the spirit of my invention.

Having thus described my invention which by accident have slipped fromwhat I claim as new, and desire to secure by Letters Patent, is-

In adevice for securing wheels and pulleys to shafts, the combination consisting of the York and State of New Yorkfl'his Nth-day of serrated block, the screw-plug engaging with December, A. D. 1886.

the upper end of said serrated block and the screw-pin adapted to hold the serrat ed block FERDINAND ROCHOW' 5 within the opening of the hub, substantially Witnesses:

as shown and described. 7 I 'B. SKAATS,

Signed at New York, in the county of New Y JOHN T. BRANCH. 

